<!DOCTYPE html>
<p>There should be a <em>square</em> below.</p>
<div style="width:12em;">
<br><br>
<div style="border:1em solid; line-height:1em; background:yellow;">
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</div>
<br><br>
</div>